<?php if ( has_nav_menu('header-menu')){ ?>
	<?php wp_nav_menu( array( 'container' => false, 'menu_class' => 'menu-list', 'theme_location' => 'header-menu' ) ); ?>
<?php } else { ?>
	<ul style="line-height:64px" class="menu-list"><a target="_blank" href="<?php bloginfo('url'); ?>/wp-admin/nav-menus.php">请点此跳转到后台设置您的导航自定义菜单</a></ul>
<?php } ?>